accessid = ''
accesskey = ''
host = ''
policyBase64 = ''
signature = ''
callbackbody = ''
filename = ''
key = ''
expire = 0
g_object_name = ''
g_object_name_type = 'random_name'
now = timestamp = Date.parse(new Date()) / 1000;

function send_request() {
	var xmlhttp = null;
	if(window.XMLHttpRequest) {
		xmlhttp = new XMLHttpRequest();
	} else if(window.ActiveXObject) {
		xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
	}

	if(xmlhttp != null) {
		serverUrl = '/index/api/oss';
		xmlhttp.open("GET", serverUrl, false);
		xmlhttp.send(null);
		return xmlhttp.responseText
	} else {
		alert("Your browser does not support XMLHTTP.");
	}
};

function get_signature() {
	//可以判断当前expire是否超过了当前时间,如果超过了当前时间,就重新取一下.3s 做为缓冲
	now = timestamp = Date.parse(new Date()) / 1000;
	if(expire < now + 3) {
		body = send_request()
		var obj = eval("(" + body + ")");
		host = obj['host']
		policyBase64 = obj['policy']
		accessid = obj['accessid']
		signature = obj['signature']
		expire = parseInt(obj['expire'])
		callbackbody = obj['callback']
		key = obj['dir']
		return true;
	}
	return false;
};

function random_string(len) {
	len = len || 32;
	var chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678';
	var maxPos = chars.length;
	var pwd = '';
	for(i = 0; i < len; i++) {
		pwd += chars.charAt(Math.floor(Math.random() * maxPos));
	}
	return pwd;
}

function get_suffix(filename) {
	pos = filename.lastIndexOf('.')
	suffix = ''
	if(pos != -1) {
		suffix = filename.substring(pos)
	}
	return suffix;
}

function calculate_object_name(filename) {
	if(g_object_name_type == 'local_name') {
		g_object_name += "${filename}"
	} else if(g_object_name_type == 'random_name') {
		suffix = get_suffix(filename)
		g_object_name = key + random_string(10) + suffix
	}
	return ''
}

function get_uploaded_object_name(filename) {
	if(g_object_name_type == 'local_name') {
		tmp_name = g_object_name
		tmp_name = tmp_name.replace("${filename}", filename);
		return tmp_name
	} else if(g_object_name_type == 'random_name') {
		return g_object_name
	}
}

function set_upload_param(up, filename, ret) {
	if(ret == false) {
		ret = get_signature()
	}
	g_object_name = key;
	if(filename != '') {
		suffix = get_suffix(filename)
		calculate_object_name(filename)
	}
	new_multipart_params = {
		'key': g_object_name,
		'policy': policyBase64,
		'OSSAccessKeyId': accessid,
		'success_action_status': '200', //让服务端返回200,不然，默认会返回204
		'callback': callbackbody,
		'signature': signature,
	};

	up.setOption({
		'url': host,
		'multipart_params': new_multipart_params
	});
	up.start();
}

var uploader2 = new plupload.Uploader({
	runtimes: 'html5,flash,silverlight,html4',
	browse_button: 'uploadImg2',
	//multi_selection: false,
	// container: document.getElementById('container'),
	flash_swf_url: './Moxie.swf',
	silverlight_xap_url: './Moxie.xap',
	url: 'https://oss.aliyuncs.com',

	filters: {
		mime_types: [ //只允许上传图片和zip文件
			{
				title: "Image files",
				extensions: "jpg,gif,png,bmp"
			},
			// { title : "Zip files", extensions : "zip,rar" }
		],
		max_file_size: '10mb', //最大只能上传10mb的文件
		prevent_duplicates: false //不允许选取重复文件
	},

	init: {
		PostInit: function() {
			//判断是否为android端访问
			function _IsAndroid() {
				if(/(Android|Adr)/i.test(navigator.userAgent)) {
					return true;
				} else {
					return false;
				}
			}
			if(_IsAndroid()) {
				document.getElementsByClassName('moxie-shim')[0].children[0].removeAttribute("capture");
			}
			$('.moxie-shim').css({
				'width': '100%',
				'height': '100%'
			})
		},

		FilesAdded: function(up, files) {
			set_upload_param(  uploader2, '', false);
			return;
		},

		BeforeUpload: function(up, file) {

			set_upload_param(up, file.name, true);
		},

		FileUploaded: function(up, file, info) {
			console.log(file, info);
			if(info.status == 200) {
				// layer.msg('上传中,请稍等...', { time: 2000 });
				$('#demo2').attr('src', 'http://lfcy.oss-cn-beijing.aliyuncs.com/' + get_uploaded_object_name(file.name));
				$('#fcard').attr('value', 'http://lfcy.oss-cn-beijing.aliyuncs.com/' + get_uploaded_object_name(file.name));
				$('#upimg2').hide();
				mui('#photo_menus').popover('hide');
			} else if(info.status == 203) {
				console.log('上传到OSS成功，但是oss访问用户设置的上传回调服务器失败，失败原因是:' + info.response);
			} else {
				console.log(info.response);
			}
		},

		Error: function(up, err) {
			if(err.code == -600) {
				console.log('\n选择的文件太大了,可以根据应用情况，在upload.js 设置一下上传的最大大小');
			} else if(err.code == -601) {
				console.log('\n选择的文件后缀不对,可以根据应用情况，在upload.js进行设置可允许的上传文件类型')
			} else if(err.code == -602) {
				console.log('\n这个文件已经上传过一遍了');
			} else {
				console.log("\nError xml:" + err.response);
			}
		}
	}
});

uploader2.init();